Revert of Disabling AppRTC browser test until I can take a closer look.

chrome/browser/media/chrome_webrtc_apprtc_browsertest.cc

Index: chrome/browser/media/chrome_webrtc_apprtc_browsertest.cc
diff --git a/chrome/browser/media/chrome_webrtc_apprtc_browsertest.cc b/chrome/browser/media/chrome_webrtc_apprtc_browsertest.cc
index c073cf1b421f657398629ea05a477f472cdb0d47..4821d4e6d5d9d8eebaea39f5481d3632cbf3189d 100644
--- a/chrome/browser/media/chrome_webrtc_apprtc_browsertest.cc
+++ b/chrome/browser/media/chrome_webrtc_apprtc_browsertest.cc
@@ -229,9 +229,7 @@
   base::Process collider_server_;
 };
 
-// Broken because of dependency updates: http://crbug.com/581283.
-IN_PROC_BROWSER_TEST_F(WebRtcApprtcBrowserTest,
-                       DISABLED_MANUAL_WorksOnApprtc) {
+IN_PROC_BROWSER_TEST_F(WebRtcApprtcBrowserTest, MANUAL_WorksOnApprtc) {
   DetectErrorsInJavaScript();
   ASSERT_TRUE(LaunchApprtcInstanceOnLocalhost("9999"));
   ASSERT_TRUE(LaunchColliderOnLocalHost("http://localhost:9999", "8089"));
@@ -271,11 +269,10 @@
   chrome::CloseWebContents(browser(), right_tab, false);
 }
 
-#if 0
+#if defined(OS_LINUX)
 #define MAYBE_MANUAL_FirefoxApprtcInteropTest MANUAL_FirefoxApprtcInteropTest
 #else
 // Not implemented yet on Windows and Mac.
-// Broken because of dependency updates: http://crbug.com/581283.
 #define MAYBE_MANUAL_FirefoxApprtcInteropTest DISABLED_MANUAL_FirefoxApprtcInteropTest
 #endif